Two new options for pmap, -X and -XX
Both options provide more information about a process using -X and -XX flags. The data comes from /proc/PID/smaps so it may vary. Signed-off-by: Craig Small <csmall@enc.com.au>
This commit is contained in:
Dimitrios Apostolou
Craig Small
parent
8e867659e6
commit
faec340719
9
pmap.1
9
pmap.1
@ -5,7 +5,7 @@
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.\" Licensed under version 2 of the GNU General Public License.
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.\" Written by Albert Cahalan.
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.\"
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.TH PMAP "1" "June 2011" "procps-ng" "User Commands"
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.TH PMAP "1" "September 2012" "procps-ng" "User Commands"
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.SH NAME
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pmap \- report memory map of a process
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.SH SYNOPSIS
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@ -32,6 +32,13 @@ and
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address range. Notice that the low and high arguments are single string
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separated with comma.
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.TP
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\fB\-X\fR
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Show even more details than the \fB\-x\fR option. WARNING: format changes
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according to \fI/proc/PID/smaps\fR
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.TP
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\fB\-XX\fR
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Show everything the kernel provides
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.TP
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\fB\-h\fR, \fB\-\-help\fR
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Display help text and exit.
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.TP
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210
pmap.c
210
pmap.c
@ -29,6 +29,7 @@
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <assert.h>
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#include "c.h"
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#include "fileutils.h"
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@ -46,6 +47,9 @@ static void __attribute__ ((__noreturn__))
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_(" %s [options] pid [pid ...]\n"), program_invocation_short_name);
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fputs(USAGE_OPTIONS, out);
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fputs(_(" -x, --extended show details\n"
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" -X show even more details\n"
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" WARNING: format changes according to /proc/PID/smaps\n"
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" -XX show everything the kernel provides\n"
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" -d, --device show the device format\n"
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" -q, --quiet do not display header and footer\n"
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" -A, --range=<low>[,<high>] limit results to the given range\n"), out);
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@ -56,12 +60,16 @@ static void __attribute__ ((__noreturn__))
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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static char mapbuf[1024];
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static char cmdbuf[512];
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static unsigned KLONG range_low;
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static unsigned KLONG range_high = ~0ull;
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static int d_option;
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static int q_option;
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static int x_option;
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static int X_option;
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static unsigned shm_minor = ~0u;
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@ -159,11 +167,183 @@ static char *mapping_name(proc_t * p, unsigned KLONG addr,
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return cp;
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}
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#define DETAIL_LENGTH 32
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#define DETL "31" /* for format strings */
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#define NUM_LENGTH 21 /* python says: len(str(2**64)) == 20 */
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#define NUML "20" /* for format strings */
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struct listnode {
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char description[DETAIL_LENGTH];
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char value_str[NUM_LENGTH];
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unsigned KLONG value;
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unsigned KLONG total;
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int max_width;
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struct listnode *next;
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};
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static struct listnode *listhead=NULL, *listtail=NULL;
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static int is_unimportant (char *s)
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{
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if (strcmp(s, "AnonHugePages") == 0) return 1;
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if (strcmp(s, "KernelPageSize") == 0) return 1;
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if (strcmp(s, "MMUPageSize") == 0) return 1;
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if (strcmp(s, "Shared_Dirty") == 0) return 1;
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if (strcmp(s, "Private_Dirty") == 0) return 1;
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if (strcmp(s, "Shared_Clean") == 0) return 1;
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if (strcmp(s, "Private_Clean") == 0) return 1;
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return 0;
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}
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static void print_extended_maps (FILE *f)
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{
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struct listnode *listnode;
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char flags[DETAIL_LENGTH], map_desc[128],
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detail_desc[DETAIL_LENGTH], value_str[NUM_LENGTH],
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start[NUM_LENGTH], end[NUM_LENGTH],
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offset[NUM_LENGTH], inode[NUM_LENGTH],
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dev[64], fmt_str[64];
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int maxw1=0, maxw2=0, maxw3=0, maxw4=0, maxw5=0;
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int nfields, firstmapping, footer_gap, i;
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unsigned KLONG value;
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char *ret;
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char c;
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ret = fgets(mapbuf, sizeof mapbuf, f);
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firstmapping = 1;
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while (ret != NULL) {
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/* === READ MAPPING === */
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map_desc[0] = '\0';
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nfields = sscanf(mapbuf,
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"%"NUML"[0-9a-f]-%"NUML"[0-9a-f] "
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"%"DETL"s %"NUML"[0-9a-f] "
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"%63[0-9a-f:] %"NUML"s %127[^\n]%c",
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start, end, flags, offset,
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dev, inode, map_desc, &c);
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/* Must read at least up to inode, else something has changed! */
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if (nfields < 6)
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xerrx(EXIT_FAILURE, _("Unknown format in smaps file!"));
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/* If line too long we dump everything else. */
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while (c != '\n') {
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ret = fgets(mapbuf, sizeof mapbuf, f);
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c = mapbuf[strlen(mapbuf) - 1];
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}
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/* Store maximum widths for printing nice later */
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if (strlen(start) > maxw1) maxw1 = strlen(start);
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if (strlen(flags) > maxw2) maxw2 = strlen(flags);
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if (strlen(offset) > maxw3) maxw3 = strlen(offset);
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if (strlen(dev) > maxw4) maxw4 = strlen(dev);
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if (strlen(inode) > maxw5) maxw5 = strlen(inode);
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if (7 > maxw5) maxw5 = 7;
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ret = fgets(mapbuf, sizeof mapbuf, f);
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nfields = sscanf(mapbuf, "%"DETL"[^:]: %"NUML"[0-9] kB %c",
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detail_desc, value_str, &c);
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listnode = listhead;
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/* === READ MAPPING DETAILS === */
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while (ret != NULL && nfields == 2) {
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if (X_option < 2 && is_unimportant(detail_desc))
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goto loop_end;
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/* === CREATE LIST AND FILL description FIELD === */
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if (listnode == NULL) {
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assert(firstmapping == 1);
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listnode = calloc(1, sizeof *listnode);
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if (listhead == NULL) {
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assert(listtail == NULL);
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listhead = listnode;
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} else {
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listtail->next = listnode;
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}
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listtail = listnode;
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/* listnode was calloc()ed so all fields are already NULL! */
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strcpy(listnode->description, detail_desc);
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if (strlen(detail_desc) > 7)
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listnode->max_width = strlen(detail_desc);
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else
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listnode->max_width = 7;
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} else {
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/* === LIST EXISTS === */
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if ((listnode == NULL) ||
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(strcmp(listnode->description, detail_desc) != 0))
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xerrx(EXIT_FAILURE, "ERROR: %s %s",
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_("inconsistent detail field in smaps file, line:\n"),
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mapbuf);
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}
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strcpy(listnode->value_str, value_str);
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sscanf(value_str, "%"KLF"u", &listnode->value);
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listnode->total += listnode->value;
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if (strlen(value_str) > listnode->max_width)
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listnode->max_width = strlen(value_str);
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listnode = listnode->next;
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loop_end:
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ret = fgets(mapbuf, sizeof mapbuf, f);
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nfields = sscanf(mapbuf, "%"DETL"[^:]: %"NUML"[0-9] kB %c",
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detail_desc, value_str, &c);
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}
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/* === PRINT THIS MAPPING === */
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/* Print header */
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if (firstmapping && !q_option) {
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if (strlen("Address") > maxw1) maxw1 = strlen("Address");
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if (strlen("Flags") > maxw2) maxw2 = strlen("Flags");
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if (strlen("Offset") > maxw3) maxw3 = strlen("Offset");
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if (strlen("Device") > maxw4) maxw4 = strlen("Device");
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if (strlen("Inode") > maxw5) maxw5 = strlen("Inode");
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sprintf(fmt_str, "%%%ds %%%ds %%%ds %%%ds %%%ds",
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maxw1, maxw2, maxw3, maxw4, maxw5);
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printf(fmt_str, "Address", "Flags", "Offset", "Device", "Inode");
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for (listnode=listhead; listnode=listnode->next;
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listnode!=NULL) {
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sprintf(fmt_str, " %%%ds", listnode->max_width);
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printf(fmt_str, listnode->description);
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}
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printf(" %s\n", "Description");
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}
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/* Print data */
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sprintf(fmt_str, "%%%ds %%%ds %%%ds %%%ds %%%ds",
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maxw1, maxw2, maxw3, maxw4, maxw5);
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printf(fmt_str, start, flags, offset, dev, inode);
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for (listnode=listhead; listnode=listnode->next;
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listnode!=NULL) {
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sprintf(fmt_str, " %%%ds", listnode->max_width);
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printf(fmt_str, listnode->value_str);
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}
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printf(" %s\n", map_desc);
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firstmapping = 0;
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}
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/* === PRINT TOTALS === */
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if (!q_option) {
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footer_gap = maxw1+maxw2+maxw3+maxw4+maxw5+5;
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for (i=0; i<footer_gap; i++)
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putc(' ', stdout);
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for (listnode=listhead; listnode=listnode->next;
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listnode!=NULL) {
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for (i=0; i<listnode->max_width; i++)
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putc('=', stdout);
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putc(' ', stdout);
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}
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putc('\n', stdout);
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for (i=0; i<footer_gap; i++)
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putc(' ', stdout);
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for (listnode=listhead; listnode=listnode->next;
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listnode!=NULL) {
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sprintf(fmt_str, "%%%dd ", listnode->max_width);
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printf(fmt_str, listnode->total);
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}
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fputs("KB \n", stdout);
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}
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/* We don't free() the list, it's used for all PIDs passed as arguments */
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}
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static int one_proc(proc_t * p)
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{
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char buf[32];
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char mapbuf[9600];
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char cmdbuf[512];
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FILE *fp;
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unsigned long total_shared = 0ul;
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unsigned long total_private_readonly = 0ul;
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@ -183,12 +363,13 @@ static int one_proc(proc_t * p)
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*/
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int maxcmd = 0xfffff;
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sprintf(buf, "/proc/%u/maps", p->tgid);
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if ((fp = fopen(buf, "r")) == NULL)
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return 1;
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if (x_option) {
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if (x_option || X_option) {
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sprintf(buf, "/proc/%u/smaps", p->tgid);
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if ((fp = freopen(buf, "r", fp)) == NULL)
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if ((fp = fopen(buf, "r")) == NULL)
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return 1;
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} else {
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sprintf(buf, "/proc/%u/maps", p->tgid);
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if ((fp = fopen(buf, "r")) == NULL)
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return 1;
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}
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@ -196,6 +377,11 @@ static int one_proc(proc_t * p)
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ESC_ARGS | ESC_BRACKETS);
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printf("%u: %s\n", p->tgid, cmdbuf);
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if (X_option) {
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print_extended_maps(fp);
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return 0;
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}
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if (!q_option && (x_option | d_option)) {
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if (x_option) {
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if (sizeof(KLONG) == 4)
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@ -431,11 +617,14 @@ int main(int argc, char **argv)
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x_option = d_option = q_option = 0;
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while ((c = getopt_long(argc, argv, "xrdqA:hV", longopts, NULL)) != -1)
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while ((c = getopt_long(argc, argv, "xXrdqA:hV", longopts, NULL)) != -1)
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switch (c) {
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case 'x':
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x_option = 1;
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break;
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case 'X':
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X_option++;
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break;
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case 'r':
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xwarnx(_("option -r is ignored as SunOS compatibility"));
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break;
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@ -468,8 +657,9 @@ int main(int argc, char **argv)
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if (argc < 1)
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xerrx(EXIT_FAILURE, _("argument missing"));
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if (d_option && x_option)
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xerrx(EXIT_FAILURE, _("options -d and -x cannot coexist"));
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if (d_option && (x_option || X_option) ||
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x_option && (d_option || X_option))
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xerrx(EXIT_FAILURE, _("options -d, -x, -X are mutually exclusive"));
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pidlist = xmalloc(sizeof(unsigned) * argc);
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@ -33,7 +33,7 @@
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//
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#if defined(k64test) || (defined(_ABIN32) && _MIPS_SIM == _ABIN32)
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#define KLONG long long // not typedef; want "unsigned KLONG" to work
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#define KLF "L"
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#define KLF "ll"
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#define STRTOUKL strtoull
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#else
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#define KLONG long
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